CN204662781U - A kind of major diameter delayed bonding prestressed tendon - Google Patents
A kind of major diameter delayed bonding prestressed tendon Download PDFInfo
- Publication number
- CN204662781U CN204662781U CN201520332518.5U CN201520332518U CN204662781U CN 204662781 U CN204662781 U CN 204662781U CN 201520332518 U CN201520332518 U CN 201520332518U CN 204662781 U CN204662781 U CN 204662781U
- Authority
- CN
- China
- Prior art keywords
- steel
- diameter
- steel wire
- prestressed
- wires
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000002435 tendon Anatomy 0.000 title claims abstract description 44
- 230000003111 delayed effect Effects 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 140
- 239000010959 steel Substances 0.000 claims abstract description 140
- 239000000853 adhesive Substances 0.000 claims abstract description 17
- 230000001070 adhesive effect Effects 0.000 claims abstract description 17
- 239000012790 adhesive layer Substances 0.000 claims description 22
- 239000010410 layer Substances 0.000 claims description 22
- 230000015271 coagulation Effects 0.000 claims description 12
- 238000005345 coagulation Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000012946 outsourcing Methods 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 238000007373 indentation Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 230000000979 retarding effect Effects 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 13
- 239000004567 concrete Substances 0.000 abstract description 11
- 230000002929 anti-fatigue Effects 0.000 abstract description 3
- 239000011513 prestressed concrete Substances 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract description 2
- 210000003205 muscle Anatomy 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 238000010622 cold drawing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
The utility model provides a kind of major diameter delayed bonding prestressed tendon, it outer coated sheath comprising prestress wire, be coated in the slow setting adhesive phase outside prestress wire and be coated on outside slow setting adhesive phase, the diameter of described prestress wire is 17.8 millimeters ~ 28.6 millimeters, and identical by 7 diameters or that 19 diameters are different steel wire twisting forms.Major diameter delayed bonding prestressed tendon of the present utility model, itself and concrete bond-anchorage are more closely knit, antifatigue cyclic reverse loading performance is more superior, for industry with civilian construction large-span prestressed concrete beam, municipal road bridge, railroad bridge, cloth muscle quantity can be reduced, improve component quality.
Description
Technical Field
The utility model relates to a major diameter postpones bonding prestressed tendons specifically indicates a slow bonding prestressed tendons that has great diameter that uses in industry and civil construction large-span prestressed concrete roof beam, municipal administration highway bridge, railway bridge.
Background
The prestress technology can effectively improve the crack resistance of a concrete structure and improve the structural durability, can obviously reduce the structural height, lighten the structural weight and save construction steel under the condition of certain span, and is a structural technology widely adopted in the field of building engineering at present. The traditional prestressing force is divided into bonding prestressing force and non-bonding prestressing force, but both prestressing forces have the shortcoming: the bonded prestressed structure has reasonable stress and good anti-seismic performance, but the construction process is complex, the quality is difficult to ensure, and the durability of the structure is reduced; the unbonded prestress construction process is simple, the quality is reliable, but the structure is unreasonable in stress, poor in anti-seismic performance and low in design strength. The slow-adhesion prestress is a new prestress technology which is researched and developed by combining the common advantages of the adhesion prestress and the non-adhesion prestress.
The slow-bonding prestressed tendon comprises a prestressed steel strand, a slow-bonding adhesive layer coated outside the prestressed steel strand and an outer sheath coated outside the slow-bonding adhesive layer, the specification of the prestressed steel strand is 1860MPa at present, the prestressed steel strand is formed by twisting 7 steel wires with the diameter of phi 5mm, and the diameter of the prestressed steel strand is 15.24 mm. The good comprehensive performance of the composite material is favored by all parties in engineering application. However, with the expansion of the application scale, the problems of dense bar arrangement and difficult construction are also exposed particularly when the prestressed girder is applied to a large-span prestressed girder, and the safety of the structure is further influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a slow bonding prestressed tendons with great diameter for during industry and civil construction large-span prestressed concrete roof beam, municipal administration highway bridge, railway bridge, solve prior art's slow bonding prestressed tendons and construct difficulty and then influence the problem of structural security when using in the large-span prestressed beam.
In order to realize the above object, the utility model provides a slow bonding prestressed tendon with great diameter, it includes prestressed steel strand wires, coating at the outer delayed coagulation adhesive layer of prestressed steel strand wires and the outsourcing sheath of cladding outside delayed coagulation adhesive layer, wherein, prestressed steel strand wires's diameter is 17.8 millimeters ~ 28.6 millimeters, is twisted with fingers the system by 7 steel wires that the diameter is the same or 19 diameters are different and forms.
The utility model discloses a major diameter slowly bonds prestressing tendons, its and the bonding anchor of concrete are more closely knit, and antifatigue is load performance more superior repeatedly.
According to the specific embodiment of the utility model, in the slow bonding prestressed tendon of the utility model, the thickness of the slow setting adhesive layer is 1.2-1.8 mm; the thickness of the outer wrapping sheath is 1.3-1.5 mm. Error +0.5mm, -0.2 mm. The utility model discloses because the increase of prestressing force steel strand wires diameter has made further improvement to the thickness isotructure characteristic of the coating thickness of delayed coagulation adhesive layer and/or outsourcing sheath, suitably increases the thickness of the coating thickness of delayed coagulation adhesive layer and/or outsourcing sheath to guarantee the prestressing force steel strand wires nominal tensile strength 1860MPa that delayed coagulation adhesive layer and outsourcing sheath bore.
According to the utility model discloses a concrete embodiment, the utility model discloses an among the slow bonding prestressed tendons, prestressed steel strand wires are twisted with the fingers the system by the same steel wire of 7 diameters and form, the mode of arranging of the same steel wire of 7 diameters does: the center is 1 steel wire, and the outer layer is 6 steel wires.
In a more specific embodiment, the prestressed steel strand is a 21.6 mm diameter prestressed steel strand twisted by 7 steel wires with the same diameter, and the 7 steel wires with the same diameter are arranged in the following manner: the center is 1 steel wire with the diameter of 7mm, and the outer layer is 6 steel wires with the diameter of 7 mm.
According to the utility model discloses a another embodiment, the utility model discloses a slow bonding prestressed tendons, wherein, prestressed steel strand wires forms for twisting with the fingers by the different steel wire of 19 diameters, the mode of arranging of the different steel wire of 19 diameters does:
the center is 1 steel wire, the middle layer is 9 steel wires, the outer layer is 9 steel wires, wherein the diameter of the middle layer steel wire is smaller than that of the outer layer steel wire, and the diameter of the outer layer steel wire is smaller than that of the center steel wire; or,
the center is 1 steel wire, and the intermediate level is 6 steel wires, and the outer layer is the steel wire of two kinds of different diameters of interval arrangement respectively 6, and wherein, central steel wire is the same with intermediate level steel wire diameter, and 6 steel wire diameters are greater than central steel wire, 6 steel wire diameters are less than central steel wire in the outer steel wire.
In a more specific embodiment, the prestressed steel strand is a 21.8 mm diameter prestressed steel strand twisted by 19 steel wires with different diameters, and the 19 steel wires with different diameters are arranged in a manner that: the steel wire of diameter 6mm is 1 at the center, 9 steel wires of diameter 4mm in the intermediate level, and 9 steel wires of diameter 5mm in the outer layer.
In another more specific embodiment, the prestressed steel strand is a 28.6 mm diameter prestressed steel strand twisted by 19 steel wires with different diameters, and the 19 steel wires with different diameters are arranged in a manner that: 1 steel wire of diameter 6mm in the center, 6 steel wires of diameter 6mm in the intermediate level, the outer interval arranges 6 each of the steel wire of diameter 5mm and diameter 7 mm.
According to the utility model discloses a concrete embodiment, the utility model discloses an among the slow bonding prestressed tendons, the steel wire is cold drawing smooth round steel wire. The preparation of cold drawn round steel wire is prior art.
According to the utility model discloses a concrete embodiment, the utility model discloses an among the slow bonding prestressed tendons, the material on slow setting adhesive layer is epoxy adhesive or the polyurethane adhesive in 6 ~ 24 months for the curing cycle. The epoxy resin adhesive or the polyurethane adhesive is made of materials in the prior art. The delayed coagulation adhesive starts to be gradually solidified after the tensioning construction is finished, and is finally firmly bonded with the prestressed steel strand bundle and the outer sheath into a whole. In addition, the retarding adhesive has good thixotropy before the tensioning construction period, is in a gel state when not influenced by external force, and can effectively prevent the problem of dripping of the retarding adhesive during production, transportation and tensioning construction; has good sliding performance when being acted by external force, and can ensure the smooth proceeding of tension construction.
According to the utility model discloses a concrete implementation scheme, the utility model discloses an among the slow bonding prestressed tendons, the surface of outsourcing sheath has corrugated even indentation (rib trace). The concrete design of the indentation can be carried out by referring to the prior art, and the rib width, the rib height and the rib spacing of the rib mark can be increased properly on the basis of the prior art. Preferably, the outer sheath has high strength and toughness, and can form good occlusion with concrete. The material of outsourcing sheath is prior art material.
The utility model has the advantages of:
1. the utility model discloses a major diameter prestressing tendons that slowly bonds, the cross-sectional area of single major diameter prestressing steel strand wires that adopts is 1.5-3 times of present single 15.24mm steel strand wires cross-sectional area, and the intensity rank is the same, and a major diameter prestressing steel strand wires equals 1.5-3 15.24mm prestressing steel strand wires promptly. Under the same other conditions, the number of the arranged ribs is reduced by 0.5 to 2 times. Thereby reducing the repeated bar arrangement construction link and improving the construction speed.
2. The utility model discloses a major diameter slowly bonds prestressing tendons, cloth muscle quantity has reduced 0.5-2 times, then can corresponding reduction to the component space occupy and increase the packing volume of concrete to the density nature of concrete has been increased, the component quality has been promoted.
3. The utility model discloses a major diameter postpones bonding prestressed tendons because the characteristics of above-mentioned item 2 make it replace conventional prestressing tendons that slowly bond in railway bridges, is showing to the antifatigue repeated loading effect that promotes the road bridge.
4. The utility model discloses a major diameter slow bonding prestressing tendons, the slow bonding prestressing tendons of more conventional diameter can more fully embody the superior performance of slow bonding prestressing technique.
5. The utility model discloses a major diameter slow bonding prestressed tendon, used outsourcing sheath can have intensity and toughness higher than the slow bonding prestressed tendon of conventional diameter, has guaranteed that major diameter slow bonding prestressed tendon is born than the bigger internal stress of slow bonding prestressed tendon of conventional diameter when the one-tenth dish is packed.
Drawings
Fig. 1 is a schematic view of a cross-sectional structure of a large-diameter slow-bonded tendon according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional structure view of a large-diameter slow-bonded tendon according to another embodiment of the present invention.
Fig. 3 is a schematic cross-sectional structure view of a large-diameter slow-bonded tendon according to another embodiment of the present invention.
Fig. 4 is a schematic view of a three-dimensional structure of a large-diameter slow-bonding tendon according to an embodiment of the present invention.
The various reference numbers in the figures illustrate:
1, pre-stressed steel strands; 2 a set retarding adhesive layer; and 3, coating a sheath.
Detailed Description
For a clearer understanding of the technical features, objects and advantages of the present invention, the technical solutions of the present invention are now described in detail with reference to specific examples, it should be understood that these examples are only used for illustrating the present invention and are not used for limiting the scope of the present invention.
Example 1
As shown in fig. 1 and 4, the large-diameter slow-bonding prestressed tendon of the present invention includes: the large-diameter prestressed steel strand 1, a slow-setting adhesive layer 2 coated outside the prestressed steel strand and capable of controlling the curing time, and an outer sheath 3 coated outside the slow-setting adhesive, wherein the outer surface of the outer sheath 3 is provided with uniform corrugated indentations.
The large-diameter prestressed steel strand 1 is formed by twisting a steel wire with the diameter of 6mm at the center, 9 steel wires with the diameter of 4mm at the middle layer and 9 steel wires with the diameter of 5mm at the outer layer, and the diameter is 21.8 mm;
the material of the delayed coagulation adhesive layer 2 with controllable curing time is an epoxy resin adhesive with a curing period of 24 months;
the outer sheath 3 is formed by extruding mixed polyethylene plastic particles.
The epoxy resin adhesive and the outer sheath are both made of materials in the prior art.
Example 2
As shown in fig. 2, the utility model discloses a major diameter slowly bonds prestressing tendons, it includes: the large-diameter prestressed steel strand 1, a set-retarding adhesive layer 2 coated outside the prestressed steel strand and capable of controlling curing time, and an outer sheath 3 coated outside the set-retarding adhesive layer, wherein the outer surface of the outer sheath 3 is provided with uniform corrugated indentations.
The large-diameter prestressed steel strand 1 is formed by twisting a steel wire with the diameter of 6mm at the center, 6 steel wires with the diameter of 6mm in the middle layer and 6 steel wires with the diameter of 5mm and 6 steel wires with the diameter of 7mm in the outer layer at intervals, and the diameter of the steel wire is 28.6 mm;
the material of the delayed coagulation adhesive layer 2 with controllable curing time is polyurethane adhesive with the curing period of 12 months;
the outer sheath 3 is formed by extruding mixed polyethylene plastic particles.
The epoxy resin adhesive and the outer sheath are both made of materials in the prior art.
Example 3
As shown in fig. 3, the utility model discloses a major diameter slowly bonds prestressing tendons, it includes: the large-diameter prestressed steel strand 1, a set-retarding adhesive layer 2 coated outside the prestressed steel strand and capable of controlling curing time, and an outer sheath 3 coated outside the set-retarding adhesive layer, wherein the outer surface of the outer sheath 3 is provided with uniform corrugated indentations.
The large-diameter prestressed steel strand 1 is formed by twisting 7 steel wires (1 central wire and 6 outer wires) with the diameter of 7mm, and the diameter of the steel wire is 21.6 mm;
the material of the delayed coagulation adhesive layer 2 with controllable curing time is an epoxy resin adhesive with the curing period of 6 months;
the outer sheath 3 is formed by extruding mixed polyethylene plastic particles.
The epoxy resin adhesive and the outer sheath are both made of materials in the prior art.
Claims (10)
1. The utility model provides a slow bonding prestressed tendon, its includes prestressed steel strand, coating at the outer delayed coagulation adhesive layer of prestressed steel strand and the outsourcing sheath of cladding outside the delayed coagulation adhesive layer, its characterized in that:
the diameter of the prestressed steel strand is 17.8-28.6 mm, and the prestressed steel strand is formed by twisting 7 steel wires with the same diameter or 19 steel wires with different diameters.
2. The slow-bonded tendon as claimed in claim 1, wherein:
the thickness of the retarding adhesive layer is 1.2-1.8 mm;
the thickness of the outer wrapping sheath is 1.3-1.5 mm.
3. The slow-bonded tendon as claimed in claim 1, wherein:
the prestressed steel strand is formed by twisting 7 steel wires with the same diameter, and the arrangement mode of the 7 steel wires with the same diameter is as follows: the center is 1 steel wire, and the outer layer is 6 steel wires.
4. The slow-bonded tendon as claimed in claim 1, wherein:
the prestressed steel strand is a 21.6 mm diameter prestressed steel strand twisted by 7 steel wires with the same diameter, and the 7 steel wires with the same diameter are arranged in the following mode: the center is 1 steel wire with the diameter of 7mm, and the outer layer is 6 steel wires with the diameter of 7 mm.
5. The slow-bonded tendon as claimed in claim 1, wherein:
the prestressed steel strand is formed by twisting 19 steel wires with different diameters, and the arrangement mode of the 19 steel wires with different diameters is as follows:
the center is 1 steel wire, the middle layer is 9 steel wires, the outer layer is 9 steel wires, wherein the diameter of the middle layer steel wire is smaller than that of the outer layer steel wire, and the diameter of the outer layer steel wire is smaller than that of the center steel wire; or,
the center is 1 steel wire, and the intermediate level is 6 steel wires, and the outer layer is the steel wire of two kinds of different diameters of interval arrangement respectively 6, and wherein, central steel wire is the same with intermediate level steel wire diameter, and 6 steel wire diameters are greater than central steel wire, 6 steel wire diameters are less than central steel wire in the outer steel wire.
6. The slow-bonded tendon as claimed in claim 1, wherein:
the prestressed steel strand is a 21.8 mm diameter prestressed steel strand formed by twisting 19 steel wires with different diameters, and the arrangement mode of the 19 steel wires with different diameters is as follows: the steel wire of diameter 6mm is 1 at the center, 9 steel wires of diameter 4mm in the intermediate level, and 9 steel wires of diameter 5mm in the outer layer.
7. The slow-bonded tendon as claimed in claim 1, wherein:
the prestressed steel strand is a 28.6 mm diameter prestressed steel strand formed by twisting 19 steel wires with different diameters, and the arrangement mode of the 19 steel wires with different diameters is as follows: 1 steel wire of diameter 6mm in the center, 6 steel wires of diameter 6mm in the intermediate level, the outer interval arranges 6 each of the steel wire of diameter 5mm and diameter 7 mm.
8. A slow-bonded tendon as claimed in any one of claims 1 to 7 wherein: the steel wire is a cold-drawn smooth round steel wire.
9. The slow-bonded tendon as claimed in claim 1, wherein: the material of the delayed coagulation adhesive layer is an epoxy resin adhesive or a polyurethane adhesive with the curing period of 6-24 months.
10. The slow-bonded tendon as claimed in claim 1, wherein: the outer surface of the outer sheath has corrugated uniform indentations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520332518.5U CN204662781U (en) | 2015-05-21 | 2015-05-21 | A kind of major diameter delayed bonding prestressed tendon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520332518.5U CN204662781U (en) | 2015-05-21 | 2015-05-21 | A kind of major diameter delayed bonding prestressed tendon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204662781U true CN204662781U (en) | 2015-09-23 |
Family
ID=54133176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520332518.5U Active CN204662781U (en) | 2015-05-21 | 2015-05-21 | A kind of major diameter delayed bonding prestressed tendon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204662781U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568725A (en) * | 2015-12-08 | 2016-05-11 | 天津市力胜通预应力工程有限公司 | Bond-retarded steel strand bundle |
| CN106677002A (en) * | 2017-01-22 | 2017-05-17 | 西安汉河环保科技有限公司 | Method for delayed coagulation and bonding of steel strand and concrete |
| CN107237248A (en) * | 2017-06-28 | 2017-10-10 | 中设设计集团股份有限公司 | A kind of bridge lateral prestress system using single large-diameter steel strand |
| CN109778664A (en) * | 2019-03-20 | 2019-05-21 | 中铁二院工程集团有限责任公司 | A kind of lightweight prestressed concrete beam bridge structure |
| CN112982730A (en) * | 2021-03-16 | 2021-06-18 | 北京工业大学 | Self-resetting wall with tuning-swinging-friction composite grading energy consumption function |
-
2015
- 2015-05-21 CN CN201520332518.5U patent/CN204662781U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568725A (en) * | 2015-12-08 | 2016-05-11 | 天津市力胜通预应力工程有限公司 | Bond-retarded steel strand bundle |
| CN106677002A (en) * | 2017-01-22 | 2017-05-17 | 西安汉河环保科技有限公司 | Method for delayed coagulation and bonding of steel strand and concrete |
| CN107237248A (en) * | 2017-06-28 | 2017-10-10 | 中设设计集团股份有限公司 | A kind of bridge lateral prestress system using single large-diameter steel strand |
| CN109778664A (en) * | 2019-03-20 | 2019-05-21 | 中铁二院工程集团有限责任公司 | A kind of lightweight prestressed concrete beam bridge structure |
| CN112982730A (en) * | 2021-03-16 | 2021-06-18 | 北京工业大学 | Self-resetting wall with tuning-swinging-friction composite grading energy consumption function |
| CN112982730B (en) * | 2021-03-16 | 2022-05-31 | 北京工业大学 | Self-resetting wall with tuning-swinging-friction composite grading energy consumption function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204662781U (en) | A kind of major diameter delayed bonding prestressed tendon | |
| CN103669208B (en) | A kind of anchoring process being applicable to large-tonnage FRP inhaul cable | |
| CN103711330A (en) | Method for using prefabricated reinforced concrete frame to reinforce existing structure through prestressing assembly | |
| CN104631836A (en) | Post-tensioning-method retard-bonded pre-stress cast-in-place concrete construction method | |
| CN106320191A (en) | Pre-tensioning steel wire and polymer mortar externally-added layer reinforcing device | |
| CN212836267U (en) | Stretch-draw bonding pre-grouting prestressed tendon | |
| CN103276674A (en) | Method for reinforcing bridge by external transverse prestressing tendons | |
| CN202450699U (en) | Extruding anchorage device special for epoxy fill-type steel strand | |
| CN103496169A (en) | Preparation method for carbon fibre composite dragline | |
| CN205591432U (en) | Enhancement mode prestressing tendons that slowly bonds | |
| CN205153320U (en) | Area is from anchor's prestressing steel | |
| CN110485631A (en) | There is the pretensioned prestressing precast beam of anchor head in a kind of end | |
| CN211007319U (en) | Beam end anchorage device for pre-tensioning method prestressed precast beam | |
| CN113481870A (en) | Prestressed anchoring structure system for assembling multi-segment bridge pier and assembling construction method of multi-segment bridge pier | |
| CN202248539U (en) | Bond-retarded tendon | |
| CN210797265U (en) | Slow-bonding welding nail and steel-concrete combined beam adopting same | |
| CN202882217U (en) | Unbonded prestressed steel reinforced concrete (SRC) beam | |
| CN214364442U (en) | Reinforced slow-bonding prestressed tendon | |
| CN203613722U (en) | Arc-shaped prestress steel pipe | |
| CN202466823U (en) | Inner tensioning prestressed concrete double-layer T-shaped frame box structure | |
| CN202466824U (en) | Box-shaped structure of internal tension prestressed concrete monolayer variable cross-section plate | |
| CN102704352B (en) | Prestressed concrete slab reinforcement structure for high-speed railway | |
| CN204898974U (en) | Adopt basement bottom plate structure of prestressing technique | |
| CN201665818U (en) | Main cable strand of long-span suspension bridge | |
| CN203097110U (en) | Pre-tensioning pre-stressing superposed beam prefabricated component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 503, commercial building, No. 27, North Third Ring Road, Xicheng District, Beijing, 100029 Patentee after: BEIJING ZHAO FUJI NEW MATERIALS TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 100080 Pioneer Building, No. 7, Pioneer Road, Haidian District information industry base, Beijing Patentee before: BEIJING ZHAO FUJI BUILDING MATERIAL TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201130 Address after: Room 503, commercial building, No. 27, North Third Ring Road, Xicheng District, Beijing, 100029 Patentee after: BEIJING ZHAO FUJI NEW MATERIALS TECHNOLOGY DEVELOPMENT Co.,Ltd. Patentee after: SICHUAN RUITIE TECHNOLOGY Co.,Ltd. Address before: Room 503, commercial building, No. 27, North Third Ring Road, Xicheng District, Beijing, 100029 Patentee before: BEIJING ZHAO FUJI NEW MATERIALS TECHNOLOGY DEVELOPMENT Co.,Ltd. |